A well-sealed beverage packaging bag

Abstract

This utility model discloses a well-sealed beverage packaging bag, comprising: a bag body, a first heat-sealing layer provided at the upper opening of the bag body, a suction nozzle heat-sealed to the middle of the first heat-sealing layer, a cap threadedly connected to the upper part of the suction nozzle, a second heat-sealing layer provided on the outer side of the first heat-sealing layer, the upper and lower edges of the second heat-sealing layer being heat-sealed to the suction nozzle and the bag body respectively, the upper edge of the first heat-sealing layer and the upper edge of the second heat-sealing layer being spaced apart, and a sealed air storage cavity being formed between the first heat-sealing layer and the second heat-sealing layer; the sealed air storage cavity formed between the first heat-sealing layer and the second heat-sealing layer is equivalent to a buffer area. When the packaging bag is subjected to external pressure, the gas in the air storage cavity can play a buffering role, reducing the direct impact of pressure on the first heat-sealing layer and the bag body, reducing the risk of heat-sealing layer rupture. By setting the air storage cavity, the grip volume at the suction nozzle of the bag body can be increased, making the user feel more comfortable during the grip.

Description

Technical Field

[0001] This utility model belongs to the field of packaging bag technology, and specifically relates to a beverage packaging bag with good sealing properties. Background Technology

[0002] As people's living standards improve, their demand for beverages is constantly increasing, leading to a corresponding increase in demand for beverage packaging. Currently, there are many types of liquid beverage packaging available on the market, such as cardboard boxes, stand-up pouches, and plastic bottles. To facilitate the use of stand-up pouches, manufacturers often install spouts on the pouch body. However, due to material and structural limitations, the seal between the spout and the stand-up pouch is often poor. External gases and bacteria can easily penetrate the seal and enter the stand-up pouch, causing the beverage inside to become contaminated and spoil.

[0003] Therefore, this application provides a well-sealed beverage packaging bag, which aims to ensure the seal between the spout and the bag body, thereby extending the shelf life of the contents after the packaging bag is opened. Utility Model Content

[0004] This invention provides a well-sealed beverage packaging bag, aiming to solve the problems pointed out in the background art.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A well-sealed beverage packaging bag includes: a bag body, a first heat-sealing layer provided at the upper opening of the bag body, a suction nozzle heat-sealed to the middle of the first heat-sealing layer, a cap threadedly connected to the upper part of the suction nozzle, and a second heat-sealing layer provided on the outer side of the first heat-sealing layer, the upper and lower edges of the second heat-sealing layer being heat-sealed to the suction nozzle and the bag body, respectively.

[0007] The upper edge of the first heat-sealing layer is spaced apart from the upper edge of the second heat-sealing layer, and a sealed gas storage cavity is formed between the first heat-sealing layer and the second heat-sealing layer.

[0008] Furthermore, the lower part of the nozzle is a heat-sealing part, and the heat-sealing part is provided with several mating grooves. The heat-sealing part is used to heat-seal the first heat-sealing layer and the second heat-sealing layer.

[0009] Furthermore, the upper part of the suction nozzle is provided with an external thread, which is used to connect with the sealing cap thread.

[0010] Furthermore, a flange is provided between the heat-sealing part of the suction nozzle and the external thread, and an installation groove is provided on the upper surface of the flange. A first sealing ring is provided in the installation groove, and a first sealing groove is provided on the upper surface of the first sealing ring. A first mating part that mates with the first sealing groove is provided on the lower edge of the cover.

[0011] Furthermore, a second sealing ring is provided on the upper surface of the inner cavity of the cap, a second sealing groove is provided on the lower surface of the second sealing ring, and a second mating part is provided on the upper edge of the suction nozzle to cooperate with the second sealing groove.

[0012] Furthermore, the outer wall of the cover is provided with several anti-slip grooves.

[0013] Compared with the prior art, the present invention has the following technical effects:

[0014] 1. The first heat-sealing layer in the well-sealed beverage packaging bag of this utility model provides a basic seal for the bag opening, preventing leakage of the beverage under normal circumstances. Building upon this, the second heat-sealing layer forms an additional layer of sealing. Even if the first heat-sealing layer suffers minor damage or incomplete sealing, the second heat-sealing layer can still prevent beverage leakage, greatly improving the overall sealing performance of the packaging bag. The sealed air-retaining cavity formed between the first and second heat-sealing layers acts as a buffer zone. When the packaging bag is subjected to external pressure, the gas in the air-retaining cavity can buffer the pressure, reducing the direct impact on the first heat-sealing layer and the bag body, lowering the risk of heat-sealing layer rupture. Furthermore, users can determine whether there is a risk of contamination of the beverage inside the bag based on whether the air-retaining cavity leaks.

[0015] 2. The well-sealed beverage packaging bag of this utility model, through the setting of the air storage cavity, can increase the grip volume at the mouth of the bag. When the user holds the packaging bag, the contact area between the palm and the packaging bag is increased accordingly. Compared with the design without the air storage cavity, the larger contact area can distribute the pressure of the hand and avoid discomfort caused by excessive local pressure, making the user feel more comfortable during the holding process. Attached Figure Description

[0016] Figure 1 This is a partial cross-sectional view of a well-sealed beverage packaging bag according to the present invention;

[0017] Figure 2 This is a schematic diagram of the spout and cap structure of a well-sealed beverage packaging bag according to the present invention;

[0018] Figure 3 This is a cross-sectional view of the spout and cap of a well-sealed beverage packaging bag according to the present invention;

[0019] Figure 4 This is a schematic diagram of the first sealing ring fitting of a well-sealed beverage packaging bag according to this utility model;

[0020] Figure 5This is a schematic diagram of the second sealing ring fitting of a well-sealed beverage packaging bag according to this utility model.

[0021] In the picture:

[0022] 1. Bag body; 101. First heat-sealing layer; 102. Second heat-sealing layer; 103. Gas storage chamber;

[0023] 2. Nozzle; 201. Heat-sealing part; 202. Mating groove; 203. Flange; 204. Mounting groove; 205. External thread; 206. Second mating part;

[0024] 3. Cover; 301. First mating part; 302. Anti-slip groove;

[0025] 4. First sealing ring; 401. First sealing groove;

[0026] 5. Second sealing ring; 501. Second sealing groove. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to specific embodiments of this application and the accompanying drawings.

[0028] like Figure 1 As shown, a well-sealed beverage packaging bag includes: a bag body 1, a first heat-sealing layer 101 provided at the upper opening of the bag body 1, a suction nozzle 2 heat-sealed to the middle of the first heat-sealing layer 101, a cap 3 threadedly connected to the upper part of the suction nozzle 2, and a second heat-sealing layer 102 provided on the outer side of the first heat-sealing layer 101, the upper and lower edges of the second heat-sealing layer 102 being heat-sealed to the suction nozzle 2 and the bag body 1 respectively.

[0029] The upper edge of the first heat-sealing layer 101 is spaced apart from the upper edge of the second heat-sealing layer 102, and a sealed gas storage cavity 103 is formed between the first heat-sealing layer 101 and the second heat-sealing layer 102.

[0030] The first heat-sealing layer 101 itself provides a basic seal for the opening of the bag 1, preventing beverage leakage under normal circumstances. The second heat-sealing layer 102 forms an additional layer of sealing. Even if the first heat-sealing layer 101 experiences minor damage or incomplete sealing, the second heat-sealing layer 102 can still prevent beverage leakage, significantly improving the overall sealing performance of the packaging bag. The sealed gas storage cavity 103 formed between the first and second heat-sealing layers 101 acts as a buffer zone. When the packaging bag is subjected to external pressure, the gas in the gas storage cavity 103 can buffer the pressure, reducing the direct impact on the first heat-sealing layer 101 and the bag body, lowering the risk of heat-sealing layer rupture. Furthermore, users can determine whether there is a risk of contamination of the beverage inside the bag based on whether the gas storage cavity 103 leaks. In one specific embodiment, the gas storage cavity 103 is filled with nitrogen gas.

[0031] By setting up the air storage chamber 103, the grip volume at the bag nozzle 2 can be increased. When the user holds the packaging bag, the contact area between the palm and the packaging bag is increased accordingly. Compared with the design without the air storage chamber 103, the larger contact area can distribute the pressure on the hand and avoid discomfort caused by excessive local pressure, making the user feel more comfortable during the grip.

[0032] like Figure 1-2 As shown, the lower part of the nozzle 2 is a heat-sealing part 201. The heat-sealing part 201 has several mating grooves 202, which are used for heat-sealing connection with the first heat-sealing layer 101 and the second heat-sealing layer 102. The mating grooves 202 increase the surface area of ​​the heat-sealing part 201 compared to a smooth surface. During heat-sealing connection with the first and second heat-sealing layers 101 and 102, the larger contact area allows for better fusion of the heat-melting materials, resulting in a more secure heat-sealing connection. In the daily use, transportation, and storage of beverage packaging, this secure connection can withstand certain external pulling and squeezing forces, reducing the risk of the nozzle 2 separating from the heat-sealing layer and ensuring that the beverage does not leak from the connection point.

[0033] As shown in the figure, the upper part of the suction nozzle 2 is provided with an external thread 205, which is used to connect with the cap 3 by thread.

[0034] like Figure 2-4As shown, a flange 203 is provided between the heat-sealing part 201 of the nozzle 2 and the external thread 205. An installation groove 204 is formed on the upper surface of the flange 203, and a first sealing ring 4 is disposed within the installation groove 204. A first sealing groove 401 is formed on the upper surface of the first sealing ring 4. A first mating part 301 is provided on the lower edge of the cap 3, which mates with the first sealing groove 401. The first sealing ring 4 itself provides a sealing barrier, filling the tiny gap between the nozzle 2 and the cap 3 to prevent beverage leakage and the entry of external air, dust, and other contaminants. The mating of the first sealing groove 401 and the first mating part 301 further enhances the sealing effect, forming a double-sealing structure. When the cap 3 is screwed onto the nozzle, the first mating part 301 is tightly embedded in the first sealing groove 401, effectively preventing beverage leakage and the intrusion of external substances, thus better maintaining the freshness and hygiene of the beverage.

[0035] like Figure 3 and Figure 5 As shown, a second sealing ring 5 is provided on the upper surface of the inner cavity of the cap 3, and a second sealing groove 501 is provided on the lower surface of the second sealing ring 5. A second mating part 206 is provided on the upper edge of the nozzle 2 to cooperate with the second sealing groove 501. When the cap 3 is tightened, the second mating part 206 is tightly embedded in the second sealing groove 501, greatly reducing the possibility of beverage spillage. It also effectively prevents external air and microorganisms from entering the packaging bag, thus better ensuring the quality and safety of the beverage. Under different storage and transportation conditions, such as temperature changes and vibrations, beverage packaging bags may face various pressures and external forces. The presence of the second sealing ring 501 enhances the stability and adaptability of the sealing structure, ensuring reliable sealing performance even in complex environments and preventing beverage deterioration or leakage due to seal failure.

[0036] like Figure 2 As shown, the outer wall of the cover 3 is provided with several anti-slip grooves 302. The design of the anti-slip grooves 302 significantly increases the friction between the fingers and the outer wall of the cover 3. When opening or closing the cover 3, the user's fingers can better grip the cover 3, reducing the difficulty of applying force due to slippage. The effect of the anti-slip grooves 302 is more obvious when the hands are wet or damp, allowing the user to easily unscrew or tighten the cover 3, improving the convenience of operation.

[0037] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of the present utility model, and these all fall within the protection scope of the present utility model.

Claims

1. A well-sealed beverage packaging bag, characterized in that, include: The bag body (1) has a first heat-sealing layer (101) at the upper opening. A suction nozzle (2) is heat-sealed in the middle of the first heat-sealing layer (101). A cap (3) is threaded onto the upper part of the suction nozzle (2). A second heat-sealing layer (102) is provided on the outer side of the first heat-sealing layer (101). The upper and lower edges of the second heat-sealing layer (102) are heat-sealed to the suction nozzle (2) and the bag body (1), respectively. The upper edge of the first heat-sealing layer (101) is spaced apart from the upper edge of the second heat-sealing layer (102), and a sealed gas storage cavity (103) is formed between the first heat-sealing layer (101) and the second heat-sealing layer (102).

2. The well-sealed beverage packaging bag according to claim 1, characterized in that, The lower part of the suction nozzle (2) is a heat-sealing part (201), and the heat-sealing part (201) is provided with a plurality of mating grooves (202). The heat-sealing part (201) is used to heat-seal the first heat-sealing layer (101) and the second heat-sealing layer (102).

3. A well-sealed beverage packaging bag according to claim 2, characterized in that, The upper part of the suction nozzle (2) is provided with an external thread (205), which is used to connect with the cap (3) by thread.

4. A well-sealed beverage packaging bag according to claim 3, characterized in that, A flange (203) is provided between the heat-sealing part (201) of the suction nozzle (2) and the external thread (205). An installation groove (204) is provided on the upper surface of the flange (203). A first sealing ring (4) is provided in the installation groove (204). A first sealing groove (401) is provided on the upper surface of the first sealing ring (4). A first mating part (301) that mates with the first sealing groove (401) is provided on the lower edge of the cover (3).

5. A well-sealed beverage packaging bag according to claim 1, characterized in that, The upper surface of the inner cavity of the cap (3) is provided with a second sealing ring (5), the lower surface of the second sealing ring (5) is provided with a second sealing groove (501), and the upper edge of the suction nozzle (2) is provided with a second mating part (206) that cooperates with the second sealing groove (501).

6. A well-sealed beverage packaging bag according to claim 1, characterized in that, The outer wall of the cover (3) is provided with several anti-slip grooves (302).

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